Most of the ISP blocks default SMTP port (25) to control mail flow hence it is always advisable to have additional SMTP port open on the server. Here are the steps to configure qmail to use alternate SMTP port 587 on Linux Plesk server.
1. Login to the shell with root user and go to “xinetd.d” directory
[root@server]# cd /etc/xinetd.d
2. [root@server]# cat smtp_psa
3. [root@server]# vi /etc/services
Add below lines in “/etc/services” file
smtp_psa_new 587/tcp mail
smtp_psa_new 587/udp mail4. [root@server]# cp smtp_psa smtp_psa_new
5. Change the service line in the new file “smtp_psa_new” to be this:
service smtp_psa_new
{
socket_type = stream
protocol = tcp
wait = no
disable = no
user = root
instances = UNLIMITED
server = /var/qmail/bin/tcp-env
server_args = /usr/sbin/rblsmtpd -r bl.spamcop.net /var/qmail/bin/relaylock /var/qmail/bin/qmail-smtpd /var/qmail/bin/smtp_auth /var/qmail/bin/true /var/qmail/bin/cmd5checkpw /var/qmail/bin/true
}6. [root@server]#/etc/init.d/xinetd restart
7. Make sure that additional port 587 is open in firewall and check whether port is now listening by following command:
[root@server]# netstat -anp | grep xinetd
It should display the output as given below
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 6989/xinetd
tcp 0 0 0.0.0.0:587 0.0.0.0:* LISTEN 6989/xinetd
That’s it !!! Enjoy
Customer support has always been the backbone of the web hosting industry. From helping users set up domains to troubleshooting…
Content is the most vital asset for businesses navigating the digital era. But creating high-quality, engaging content consistently can be…
Welcome to the exciting world of Ollama, a revolutionary open-source tool that's democratizing access to Large Language Models (LLMs). If…
Managing files on your Amazon EC2 instances can often feel like navigating a complex maze, especially when you prefer a…
Welcome to the world of database management with MySQL Workbench! If you're new to databases or looking for a powerful,…